SOLAR POWER SOLUTION FOR TELECOM APPLICATIONS

TECHNICAL OVERVIEW

BY

DIAMOND GREEN ENERGY CORPORATION

OVERVIEW

Telecommunications and security applications are typically located far from the reach of grid lines.

If grid lines are available they are not so dependable , and telecom companies have to face problems of erratic power supply.

The present alternative with the companies is use of Generator sets at each tower. These are backed up with inverter and battery bank.

With the increase in cost of diesel and pilferage of diesel, companies are forced to find a solution to overcome this problem.

The solution lies in installation of SOLAR POWERED PLANTS.

AdvantagesAvailability of clean power , which ensures

effective operation and performance of BTS stations.

Reduction of operational cost. And Carbon emissions.

Negligible maintenance.Noise free.Independent of other modes of electrical

infrastructure.

System ConfigurationThe Solar systems are designed to provide

either DC or AC output power depending on type of load. Most telecom systems operate on 12/24/48v DC. Typical system sizes are 2,3,4 & 7 kw.

The system provides sufficient energy for the specific applications and store the energy in maintenance free batteries. Depending on specific requirements, the system can be configured to store and provide Solar energy up to 7 cloudy – non sunshine days.

Scope Of SupplySolar panel to required sizing.Module mounting structureSolar charge controllerRelated Cable assembly up to connection to

battery bankJunction box with safety switch.Installation and CommissioningInverter for Dc to Ac Conversion For Ac Load and

related cabling. OPTIONAL AT EXTRA COST.Web based Remote sensing software at Extra

cost.

Typical power consumption information of cell tower

SITE TYPE BTSLIGHTING

LOADAIRCONDITIO

NER LOAD TOTAL LOAD

KW WATT KW KW

1 OUTDOOR 1.2, 48 V DC 300, 220 V AC 0 1.5

2 INDOOR 0 0 2.0, 220 V AC 2

TOTAL LOAD OF BTS,

LIGHTING AND AC 3.5

LOAD ANALYSIS FOR SYSTEM SIZINGBTS LOADFor 12 Hrs during day, the average BTS load is 1.2KW at 48V

DC…..is 25AH x 12=300AH For 12 Hrs during night, the average is approximately 0.7KW at

48V DC…….is 15AH x 12=180AHTotal ampere/hr required for BTS =480AHAIR CONDITIONER LOADPower rating of air conditioner 2KW at 230V/50hzConsidering power factor of one and duty cycle at 30% for air

conditioner, the AH required at 48V DC is 300AH.

THE CUMULATIVE AH REQUIRED FOR BATTERY BANK PER DAY CONSIDERING ALLOWANCE FOR SYSTEM LOSSES ETC.=800AH

Considering 75% depth of discharge, below is the percentage of battery bank which can be charged by solar. Where the solar is charging part capacity of battery bank, the DG set should be run to charge the balance AH

Solar array size / Average

power generation in AH per day

BATTERY BANK SIZE

300AH 600AH 900AH 1200AH1KW (115AH @ 48V

DC)50% 25% 20% 15%

2KW (230AH @ 48V DC)

100% 50% 35% 25%

3KW (345AH @ 48V DC)

BATT.BANK INSUFFICIEN

T

75% 50% 40%

4KW (460AH @ 48V DC)

BATT.BANK INSUFFICIEN

T

100% 70% 50%

5KW (572AH @ 48V DC)

BATT.BANK INSUFFICIEN

T

BATT.BANK INSUFFICIENT

85% 65%

6KW (687AH @ 48V DC)

BATT.BANK INSUFFICIEN

T

BATT.BANK INSUUFICIENT

100% 75%

DG RUN TIME REQUIRED TO TOP THE BATTERY BANK ( 15 KVA DG SET CHARGES THE BATTERY AT 50 AH)

SOLAR ARRAY SIZE/AVERAGE POWER GENERATION IN AH/DAY

BATTERY BANK SIZE

300 AH 600 AH 900 AH 1200 AH

IKW ( 115AH @ 48V DC) 115 AH/ 2 HRS OF DG

337 AH/7 HRS OF DG

540 AH/ 11 HRS OF DG

765 AH /15 HRS OF DG

2KW ( 230 AH@48 V DC)

0AH/0 HRS OF DG

225 AH/4.5 HRS OF DG

438 AH/9 HRS OF DG

675 AH /13.5 HRS OF DG

3KW (345AH @ 48V DC) 112 AH/2 HRS OF DG

330 AH/6.5 HRS OF DG

540 AH/11 HRS OF DG

4KW (460AH @ 48V DC) 0AH/0HRS OF DG

200 AH/4HRS OF DG

450 AH/9 HRS OF DG

5KW (572AH @ 48V DC) 100 AH /2 HRS OF DG

315 AH/6 HRS OF DG

6KW (687AH @ 48V DC) 0 AH/ 0 HRS OF DG

225 AH /4.5 HRS OF DG

DG RUN TIME REQUIRED FOR 24 HRS OPERATION OF BTS AND AIRCONDITIONER LOADSOLAR ARRAY SIZE/AVERAGE POWER GENERATION IN AH/DAY

BATTERY BANK SIZE

300 AH 600 AH 900 AH 1100 AH

IKW ( 115AH @ 48V DC)

685 AH/14 HRS OF DG

685 AH/14 HRS DG 685 AH/14 HRS DG

685 AH/14 HRS DG

2KW ( 230 AH@48 V DC)

575 AH/11.5 HRS OF DG

575 AH/11.5 HRS OF DG

575 AH/11.5 HRS OF DG

575 AH/11.5 HRS OF DG

3KW (345AH @ 48V DC)

455 AH/9 HRS OF DG

455 AH/9 HRS OF DG

455 AH/9 HRS OF DG

4KW (460AH @ 48V DC)

340 AH /7 HRS OF DG

340 AH /7 HRS OF DG

340 AH /7 HRS OF DG

5KW (572AH @ 48V DC)

228 AH/4.5 HRS OF DG

228 AH/4.5 HRS OF DG

6KW (687AH @ 48V DC)

0 AH/ 2 HRS OF DG

110 AH/2 HRS OF DG

7KW (800AH @ 48V DC)

0 AH/0 HRS OF DG

INFERENCECumulative load AH per day , including BTS and Air conditioner is 800 AH.For DG to power 100 % load without solar system 15 KVA DG should run

for minimum 16 Hrs a day.A 7 Kw solar system with 1100 AH battery bank is required to run the total

load for 24 Hrs , DG set required to support non sunshine days.

Optimal solar-DG hybrid system • A 4 Kw system with 900 AH battery bank needs only 4 hrs of DG run to take care of total load .• 4Kw solar system will account to saving of 12 Hrs of DG run , saving 30 liters of diesel per day amounting to Rs 1500 per day , 5.47 lakh per year. • Hence the payback on a 4 Kw solar power system is approx. 1.25 years.

OUR INSTALLATIONS IN BIHARRAR

About UsDiamond Green Energy Corporation works as a Solar

System Integrator in association with a Channel Partner of MNRE , i.e., Kotak Urja Pvt Ltd, Bangalore.

It is a sole proprietorship concern. The owner is a Techno commercial personality with experience of more than 27 years, out of which 11 years have been in Solar line.

He has vast experience of Solar installations in Africa namely in Nigeria, Kenya, and South Africa.

Presently He is working in Bihar and Jharkhand for electrification of villages where Grid lines have not been provided by Government so far. More than 400 villages have been electrified in the last three years.

THANK YOU

DIAMOND GREEN ENERGY CORPORATION #404, GH16, SECTOR 20, PANCHKULA, HARYANA REGD OFFICE; OLD THANA ROAD, HASPURA , AURANGABAD, BIHAR.

BRANCH OFFICE ; #504, EMARAT FIRDAUS,EXHIBITION ROAD , PATNA , BIHAR

CONTACT; 91-9815067680, 91-8757498772, www,diamondgreenenergy.in